Sioux Valley Co-op - Cenex
220 10th St NW, Watertown, SD 57201
24 hours daily
605-886-5829
8 E85 stations in Watertown, SD
Drivers have recently confirmed that 8 stations currently carry E85 in Watertown, SD, while 1 other station is inactive. The Watertown E85 map was last updated in 2026.
Watertown, SD E85 Flex Fuel Station List
Use the station cards below for addresses, hours, notes, click-to-call phone links, and direct map directions.
Cenex Convenience Store & Car Wash
1601 9th Ave SE, Watertown, SD 57201
6am-10pm daily
605-886-2271
Stone's Truck Stop
3801 9th Ave SE, Watertown, SD 57201
24 hours daily
605-882-1484
Sioux Valley Co-op - Cenex
1016 5th St SE, Watertown, SD 57201
24 hours daily
605-886-5829
Prairie Stop
1007 9th Ave SW, Watertown, SD 57201
24 hours daily
605-886-3133
Tip Top
46399 US Highway 212, Watertown, SD 57201
7am-12am daily
605-886-9294
Cowboy Country Store
504 9th Ave SE, Watertown, SD 57201
24 hours daily
605-882-9000
Cowboy Country Store
1400 4th St NE, Watertown, SD 57201
24 hours daily
605-886-4444
Lake Stop 20
No E852301 N Highway 20, Watertown, SD 57201
6am-11pm M-Sat, 6am-10pm Sun
605-753-5646
Questions about E85 in Watertown, SD?
Where can I get E85 gas in Watertown, SD?
Recent driver reports indicate that you can currently get E85 at 8 stations in Watertown, SD: Sioux Valley Co-op - Cenex, at 220 10th St NW, Watertown, SD 57201; Cenex Convenience Store & Car Wash, at 1601 9th Ave SE, Watertown, SD 57201; Stone's Truck Stop, at 3801 9th Ave SE, Watertown, SD 57201; Sioux Valley Co-op - Cenex, at 1016 5th St SE, Watertown, SD 57201; Prairie Stop, at 1007 9th Ave SW, Watertown, SD 57201; Tip Top, at 46399 US Highway 212, Watertown, SD 57201; Cowboy Country Store, at 504 9th Ave SE, Watertown, SD 57201, and Cowboy Country Store, at 1400 4th St NE, Watertown, SD 57201. The other station no longer carries E85 based on recent driver updates.
Can I contact E85 stations in Watertown before visiting?
Yes. Each station card includes a click-to-call phone link so you can confirm availability and hours before you drive over.
Why is e85near.me better at finding E85 in Watertown, SD?
Unlike other frustrating E85 finders, you can browse E85 stations right away without installing an app or creating an account. Unlike Google / Apple Maps data, e85near.me stays updated by combining government data with user contributions to stay on top of station availability changes.